The '512' are the last three digits of the casting number used to help identify engine blocks. The full casting number is 3963512; this block was used for the 69 427 and both 70 and 71 454. One would have to look at the casting date to see when it was made. The casting date is located on the flange by the bell housing area and is in the format of a letter for the month (A..L - Jan..Dec), one or two digits for the day and a single digit for year - e.g., B250 would be February 25, 1970; B50 would be February 5, 1970.
Dale McIntosh <http://www.chevellecd.com> 1966/67 Chevelle Reference CDs ChevelleStuff.com <http://www.chevellestuff.com> ACES #1709/TC GOLD #92 <http://www.chevellecd.com> _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, April 18, 2007 9:14 PM To: [email protected] Subject: [Chevelle-list] Engine Casting Block Number Question Need some help. A friend of mine is looking at a '70SS. Engine is out as is the trans and rear end. Seller says the engine is a '70 and has a casting number on the block that is 512. What is this 512 number? Any help would be appreciated. Thanks, Jerry Wells ACES 5923 _____ See what's free at AOL.com <http://www.aol.com?ncid=AOLAOF00020000000503> . _____ avast! Antivirus <http://www.avast.com> : Outbound message clean. Virus Database (VPS): 000734-2, 04/18/2007 Tested on: 4/18/2007 10:14:14 PM avast! - copyright (c) 1988-2007 ALWIL Software.
